<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>AQA Platform</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet">

    <style>
      body {
        background-color: #eee;
      }
      .main {
        /*margin-top: 60px;*/
        /*background-color: #222;*/
        margin: 50px 100px 100px 100px;
        background-color: #eee;
        border-style: solid;
        /*text-align: center;*/
      }

      .left{
        /*background-color: blue;*/
        float: left;
        width: 75%;
        border-style: solid;
      }

      .right{
        /*background-color: red;*/
        float: right;
        width: 25%;
        border-style: solid;
      }

    </style>
  </head>
  <body>
    <!-- Fixed navbar -->
    <nav class="navbar navbar-default navbar-fixed-top">
      <div class="container">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="#">AQA</a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">问答</a></li>
            <li><a href="#about">文章</a></li>
            <li><a href="#contact">社区</a></li>
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
              <ul class="dropdown-menu">
                <li><a href="#">Action</a></li>
                <li><a href="#">Another action</a></li>
                <li><a href="#">Something else here</a></li>
                <li role="separator" class="divider"></li>
                <li class="dropdown-header">Nav header</li>
                <li><a href="#">Separated link</a></li>
                <li><a href="#">One more separated link</a></li>
              </ul>
            </li>
          </ul>
        </div><!--/.nav-collapse -->
      </div>
    </nav>
    
    <div class="main container panel panel-primary">
      <div class="left container panel panel-success">
        <p>this is left area</p>
        <p>this is left area</p>
        <p>this is left area</p>
        <p>this is left area</p>
        <p>this is left area</p>
        <p>this is left area</p>
        <p>this is left area</p>
        <p>this is left area</p>
      </div>
      <div class="right container panel panel-info">
        <p>this is right area</p>
        <p>this is right area</p>
        <p>this is right area</p>
        <p>this is right area</p>
        <p>this is right area</p>
        <p>this is right area</p>
      </div>

    </div>

    <script src="js/jquery.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
  </body>
</html>